Distributed fusion receding horizon filtering for uncertain linear stochastic systems with time-delay sensors     

Il Young Song  Vladimir Shin  Moongu Jeon 《Journal of The Franklin Institute》2012,349(3):928-946

A new distributed fusion receding horizon filtering problem is investigated for uncertain linear stochastic systems with time-delay sensors. First, we construct a local receding horizon Kalman filter having time delays (LRHKFTDs) in both the system and measurement models. The key technique is the derivation of recursive error cross-covariance equations between LRHKFTDs in order to compute the optimal matrix fusion weights. It is the first time to present distributed fusion receding horizon filter for linear discrete-time systems with delayed sensors. It has a parallel structure that enables processing of multisensory time-delay measurements, so the calculation burden can be reduced and it is more reliable than the centralized version if some sensors turn faulty. Simulations for a multiple time-delays system show the effectiveness of the proposed filter in comparison with centralized receding horizon filter and non-receding versions.  相似文献   

Efficient probabilistic XML query processing using an extended labeling scheme and a lightweight index     

Jung-Hee Yun  Chin-Wan Chung 《Information processing & management》2012

Recently there is a growing interest in the data model and query processing for probabilistic XML data. There are many potential applications of probabilistic data, and the XML data model is suitable to represent hierarchical information and data uncertainty of different levels naturally. However, the previously proposed probabilistic XML data models and query processing techniques separate finding data matches with evaluating the probabilities of results. Therefore, they should repeatedly access the data and need to get full data of paths given in queries to calculate the probabilities of results.  相似文献   

Congenital atresia of the left main coronary artery in an infant     

Su Ye Sohn  Gi Young Jang  Byung Min Choi 《Journal of Zhejiang University. Science. B》2010,11(7):539-541

Congenital atresia of the left main coronary artery is a rare occurrence, and surgical revascularizationbypass graft is required. We here report a rare case of congenital coronary anomaly in an infant. A 10-month-old male infant was admitted to the hospital with heart failure symptoms. Echocardiographic examinations revealed mitral valve regurgitation and ischemic changes of the anterolateral papillary muscle and chordae. Coronary angiography showed atresia of the left main coronary artery with a severe hypoplastic left anterior descending artery and a circumflex coronary artery. Unfortunately, sudden cardiac arrest occurred after catheterization and the infant did not recover despite of immediate cardiopulmonary resuscitation. Further studies are needed to find a newer diagnostic method to detect coronary anomaly in an infant, and coronary angiography, if necessary, has to be performed very carefully.  相似文献   

Informed choice and deaf children: underpinning concepts and enduring challenges   总被引：3，自引：0，他引：3  

Young A  Carr G  Hunt R  McCracken W  Skipp A  Tattersall H 《Journal of deaf studies and deaf education》2006,11(3):322-336

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Mapping beliefs about teaching to patterns of instruction within science,technology, engineering,and mathematics     

Cheryl Allendoerfer  Denise Wilson  Mee Joo Kim  Elizabeth Burpee 《Teaching in Higher Education》2013,18(7):758-771

In this paper, we identify beliefs about teaching and patterns of instruction valued and emphasized by science, technology, engineering, and mathematics faculty in higher education in the USA. Drawing on the notion that effective teaching is student-centered rather than teacher-centered and must include a balance of knowledge-, learner-, community-, and assessment-centered learning environments; we use qualitative interview data to explore how faculty's reported beliefs about teaching are associated with their consideration of these four types of environments. Findings indicated that although a range of beliefs about teaching emerged, most were firmly located in knowledge-centered learning environments, with little or no focus on the remaining three learning environments. Furthermore, even patterns of instruction that were heavily student-centered were situated within a knowledge-centered learning framework. We argue that for student-centered instruction to be truly successful, faculty must consider all four learning environments in crafting and facilitating the classroom environment.  相似文献   

Mentoring in the virtual organization: keys to building successful schools and businesses     

Deborah Lavin Colky  William H. Young 《Mentoring & Tutoring: Partnership in Learning》2013,21(4):433-447

Mentoring can take on a whole new perspective when people have a common goal but are in different physical locations. The benefits of virtual mentoring, in other words, mentoring when the mentor and mentee are not geographically co‐located, and which occurs mainly by electronic communication, can be substantial. They include lowered costs, increased access to mentors, and no limitations on space, time, and location. There are also disadvantages to virtual mentoring. Notable among these is the lack of face‐to‐face communication, something that adds another dimension to understanding the tone and attitude of messages between mentors and mentees. This article not only defines and analyzes the concept of mentoring as performed in the virtual organization but also deals with phases of mentoring and types of mentors used in this relatively new work environment. The synthesis of the literature and the authors’ experience results in a list of keys to successful mentoring in the virtual organization. These are: trust, self‐motivation, flexibility, communication skills, and technological skills. In addition, implications for worldwide mentoring are discussed.  相似文献   

Book Reviews     

Lee Stewart Ed.D.  Christy M. Rhodes MS  William H. Young EdD  Deborah T. Carran  Teresa Craig Evans  Joan C. Fingon 《Mentoring & Tutoring: Partnership in Learning》2013,21(3):47-52

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Connecting to the Good Life through outdoor adventure leadership experiences designed for Indigenous youth     

Stephen D. Ritchie  Mary Jo Wabano  Rita G. Corbiere  Brenda M. Restoule  Keith C. Russell  Nancy L. Young 《Journal of Adventure Education & Outdoor Learning》2013,13(4):350-370

Indigenous voices are largely silent in the outdoor education and adventure therapy literature. The purpose of this research collaboration was to understand how a 10-day outdoor adventure leadership experience (OALE) may promote resilience and well-being for Indigenous youth through their participation in the program. The process was examined through a community-based participatory research project that sought insight from the perspectives of one First Nations community in Canada. The OALE was implemented with six different groups for a total of 43 youth participants (ages 11.9–18.7 years) from Wikwemikong Unceded Indian Reserve in northeastern Ontario. Field data were collected from multiple sources including participant interviews, journals, focus groups, and talking circles. Using a critical ethnographic lens, we analyzed the data inductively to understand how the OALE promoted resilience and well-being. We listened to Indigenous voices, adhered to principles of Indigenous coding for thematic content and respected Indigenous ways of knowing for interpreting results. The process of connecting to the Good Life (Anishinaabe Bimaadziwin) or waking up (nsidwaaswok) to the Good Life emerged as the dominant theme. Connecting to the Good Life may offer a simple yet compelling way to understand the net impact of the OALE.  相似文献   

The application of cognitive learning theory to criminal justice education     

Dawn B. Young  George M. McCormick II 《Journal of Criminal Justice Education》2013,24(1):5-14

Most criminal justice programs began as extensions of vocational technical training courses, but within the last decade they have begun to parallel the liberal arts programs originally proposed. As a result of this reorientation, criminal justice instructors lack many of the instructional methods used by colleagues in other fields. In addition, the dual nature of criminal justice instruction, requiring both experience and theory, places demands on criminal justice instructors that their colleagues may not experience. The field needs an instructional approach that blends the best of the vocational aspects and the theoretical underpinnings. This paper reviews cognitive learning theory, specifically Kolb's experiential learning model. Recommendations are offered for the application of this model to instruction in criminal justice courses.  相似文献   

Examining the Validity of Standards-Based Assessments for Initially Fluent Students and Former English Language Learners     

John W. Young  Jonathan Steinberg  Fred Cline  Elizabeth Stone  Maria Martiniello  Guangming Ling 《Educational Assessment》2013,18(2):87-106

To date, assessment validity research on non-native English speaking students in the United States has focused exclusively on those who are presently English language learners (ELLs). However, little, if any, research has been conducted on two other sizable groups of language minority students: (a) bilingual or multilingual students who were already English proficient when they entered the school system (IFEPs), and (b) former English language learners, those students who were once classified as ELLs but are now reclassified as being English proficient (RFEPs). This study investigated the validity of several standards-based assessments in mathematics and science for these two student groups and found a very high degree of score comparability, when compared with native English speakers, for the IFEPs, whereas a moderate to high degree of score comparability was observed for the RFEPs. Thus, test scores for these two groups on the assessments we studied appear to be valid indicators of their content knowledge, to a degree similar to that of native English speakers.  相似文献